They are not able to produce some state of the art hardware.
They have said from the start, they wont make hardware, only licence the Amiga name for other peoples hardware.
We live in 2007 and they now promised 667mhz hardware when everybody is playing with gigaherz.
The most popular console at the moment is the Nes Wii which us running in the Mhz not Ghz (ok its 900 and something Mhz but still ;-) )
It can't be that difficult to produce some good hardware based on powerpc and amigaos.
Try it Mr, it costs a lot of money and takes a lot of time to make a new computer, debug it, write software for it, etc.
Then you can position it between playstation,xbox and wii.
The Amiga is never going to see the spotlight again, its just a retro machine now, which doesnt mean it wont develope, just that it would be really doubtful it will ever be "Mainstream" again.